The building with the white roof (i'm gessing it's the actual convention center), reminds me of TWA flight center

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"A couple of years ago, a couple of geniuses put on something called Woodstock Festival. It was a tragedy. Groups recognised that they could go into larger cattle markets, play less time and make more dollars. What they've done is to destroy the rock industry."- Bill Graham

^True that it does look like there's a fair bit of wasted space but in China , that's usually part of the plan. Don't forget , we're talking about a country where there is no wasted space. The idea is to at least give people the impression of openness .